Dniester Pumped Storage Tender

Scope The Dniester power project is a 2.2GW pumped-storage power plant PSPP under construction in the Chrnivtsi province of Ukraine. Ukrhydroenergo is developing the pumped-storage power generation facility through a consortium namely Research Production Association RPA Ukrgidroenergobud that includes Dnipro-Spetsgidroenergomontazhe Enpaselectro Kyivmetrobud SHDSU and Intergidrobud. The main civil construction works on the project were started in 1988 while the first and second units of the facility were brought online in 2010 and 2014 respectively. The third unit commenced operations in August 2016 while the fourth unit is expected to come online by the third quarter of 2021. The power station is expected to attain full capacity with the commissioning of the remaining three pump-turbine units by 2028. The Dniester pumped-storage hydroelectric facility is located approximately 20km away from the Sokyryany city in the Chrnivtsi province of Ukraine. The project site lies on the right bank of the middle section of the Dniester River near Ukraines border with Moldova. The Dniester pumped-storage facility will comprise a total of seven units for a total power output of 2268MW. Each turbine will operate at a net head of 162m. Each unit will be equipped with a radial-axial pump-turbine unit designed to produce 324MW of electricity while operating in turbine mode and consume 421MW of electricity while operating in pump mode. The powerhouse measures approximately 288m-long 27m- wide and 21.3m high divided into underground and surface sections. The other major components of the project include an upper reservoir the water intake system seven pressure water mains drainage pipes water release system offtake system and a lower reservoir. Located on a natural plateau at a height of 150m above the Dniester River level the total storage volume of the upper reservoir is approximately 41.43 million cubic metres mcm whereas the lower basin creates a reservoir volume of approximately 58.1mcm. The electricity generated from the Dniester pumped storage hydroelectric power plant is evacuated into the grid through a 330kV power transmission line. The RPA Ukrgidroenergobud consortium has been engaged as the general contractor for the design engineering construction and installation works of the Dniester PSPP. Ukrhydroproekt provided the engineering and design services for the pumped storage project. The scope included the feasibility study design calculations working documentation and supervision services. Kyiv Energy Construction Company KECC was contracted for the electrical installation and commissioning services of the fourth unit in May 2018 while Electrotyazhmash manufactured and supplied the generator along with stator of hydro generator motor for the fourth unit of the project. Turboatom is responsible for manufacture and supply of pump turbines while Zaporizhtransformator supplied the transformers for t